Batman worries about things like his loved ones dying, failing to save Gotham, or his successors becoming evil. Unfortunately for the Dark Knight, these fears have often manifested in reality, with Bruce Wayne having to face his worst nightmares and push his mental limits.
Batman's scares are very much rooted in his past. Right from his childhood incident of falling down a well and Bats hovering over (Batman Begins), to the murder of Young Wayne's parents, resulting in the fear of Bats and of losing loved ones.
Although Batman is a skilled fighter and has a lot of defensive techs, he“s just a regular human and has no inherent superpowers. This doesn“t matter when dealing with “regular”“ criminals, but when faced with the likes of Bane or Mr. Freeze, Batman becomes vulnerable to injuries or freezing just like any other human.
While Superman himself does not pose a threat, his existence does. Bruce fears Superman because he feels he will bring danger to the planet, which he does albeit indirectly.
There's no doubt that recalling the fate of his parents is Bruce's biggest fear and regret. No matter who kills Batman's parents in different media, it's the catalyst to the person he becomes. Bruce spent all his childhood and early adulthood scared of remember what had happened.
Batman Acknowledges That Flash Can End The Universe
Despite the fact that there was also an unstable doppelgänger of Superman present within Red Mask's prison, Batman was shown to be drastically more afraid of the Flash.
To Be Forgotten. While fans got to hear many memorable quotes from Joker in Batman: Arkham, the series also revealed what his greatest fear is supposed to be. As it turned out, The Joker feared being forgotten more than anything else because it meant nobody was afraid of him anymore, rendering all his crimes void.
Batman has fought numerous villains in his time as the Caped Crusader, but few have harmed him and his allies as much as the Joker has. Batman has admitted several times that his enemies don't get worse than the Joker, so it's obvious that the clown has left a deep scar in Batman.
Bronze Tiger is in a slightly higher class than Batman when it comes to their fighting skills. Brainwashed into being a villain, Bronze Tiger has no qualms using lethal force if needed. Batman has yet to defeat him solo, and most of their match-ups end in draws.
He is Batman's archenemy, as well as the most famous and recurring Batman villain. Waylon Jones has a medical condition that warped his body into a massive crocodile-like form. As Killer Croc descended into madness, he sharpened his teeth to razor points and began murdering innocent victims.
The author's supposition is that Batman exists to exploit a natural weakness in the criminal mind. He scares not because he's the scariest, but because criminals scare easily.
So what is it that makes the criminals fearful upon seeing him in the night? Besides his mental and physical capabilities, Batman's visible threat is conveyed through his choice of mask and costume. It is what brings about a cascade of fear within the hearts of evildoers.
You will know why he is feared. He doesn't kill his enemy who is bigger, more powerful and much younger. He leaves him incapable. He beats him, breaks him, batters his ego, makes a ruthless, powerful, terrorizing leader weep like a baby, turns him to a lump of bones with his bare hands.
Batman worries about things like his loved ones dying, failing to save Gotham, or his successors becoming evil. Unfortunately for the Dark Knight, these fears have often manifested in reality, with Bruce Wayne having to face his worst nightmares and push his mental limits.
That would explain why Thomas Elliot doesn't fear Batman. He knows who is behind the mask and Hush resents him for gaining the wealth and independence he craved as a child. As a skilled tactician, Thomas learned from a young age to think like his opponents and use them to his advantage.
This is the Batman—a beacon of hope—who sees us off at the end of the film, and the Batman that Pattison's Bruce Wayne will set out to be in the future. Batman's feeling of fearing loss is heavily explored in this film.
In the documentary I Am Heath Ledger (via Digital Spy) it's revealed that, in order to keep the prosthetics in their place as they got loose when he spoke, Ledger had to lick his makeup to keep it in place, and it ended up becoming part of the Joker's manic personality, as well as his most memorable mannerism.
Flash's super speed would give him the advantage in a fight against Batman. Many fans believe Batman's victories are due to plot armor and preparation time. Some argue that the outcome depends on the writers' preferences. The debate between Speed of Light and Prep Time continues to rage on.
Flash could see anything Bats tried to do, and he could keep moving faster that any human could track. Batman can only defeat Flash with proper planning and, more importantly, if Flash is holding back (or more likely, is ambushed and doesn't know they're fighting).
Instead, Flash fears the hyper-intelligent, telepathic gorilla he's had occasional bouts with. The core of the nightmare seems to be centered around Barry failing Wally, suggesting that Gorilla Grodd is the villain that Flash fears when it comes to the safety of his extended family.
